body {
    font-size: 100.0%;
    font-family: Verdana, Arial, Helvetica, sans-serif;
    width: 960px;
    position: absolute;
    left: 50%;
    margin-left: -480px;

}



#kopfbereich {
    background-color: lightblue;
}

#inhalt {
    float: left;
    width: 670px;
    background-color: greenyellow;
    padding: 0px 20px;



}

#steuerung {
    float: left;
    width: 250px;
    background-color: brown;

}

#fussbereich {
    clear: both;
    background-color: yellowgreen;
}